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A Maryland woman has pleaded guilty to involuntary manslaughter after her husband punched their infant son and the couple buried his body.

Geneice Petty pleaded guilty after the death of her 2-month-old son, Antoine Flemons, in September 2016, Prince George's County prosecutors announced Monday morning.

Flemons was last seen alive with his mother, who was 24 at the time of the crime, on Sept. 22, 2016. He was reported missing weeks later, on Oct. 16, 2016.

The baby's father, Antoine Petty, punched the baby repeatedly in the torso to stop him from crying.

Prince George's County Parents Accused in Killing of Infant Appear in Court

Geneice Petty and Antoine Petty appeared in court Friday in connection to the death of their 3-month-old son. Prince George's County State's Attorney Angela Alsobrooks asked people with knowledge of unfit parents to come forward. News4's Tracee Wilkins reports.

(Published Friday, Oct. 21, 2016)

The mother and father kept their son's body in their 1998 Lincoln Town Car hearse for more than a day and then buried his body in a shallow grave behind Parkdale High School in Riverdale, Maryland.

Both parents kept the child’s death a secret for more than three weeks before Flemons’ grandmother reported him missing.